This looks like a pretty interesting piece of kit, particularly given the
specs for the price ($69USD for the beta board).  Might be worth a look
into as a potential candidate for the make-wifi-fast router.

Wi-Fi SoC – Mediatek MT7621A dual core MIPS 1004Kc processor @ 880MHz
System Memory – 512 MB DDR3 (Beta version: 256 MB)
Storage – 16 MB SPI flash memory, 2x SATA 3.0 ports, micro SD card slot

Wi-Fi
802.11 b/g/n @ 2.4GHz up to 300Mbps
802.11 a/n/ac @ 5 GHz, up to 867Mbps (AC1200 class router)
External High-Gain Antennas – 2x for 2.4GHz, 2x for 5GHz

Ethernet – 2x LAN (Gigabit Ethernet), 1x WAN (Gigabit Ethernet)
USB – 1x USB 2.0 host port, 1x USB 3.0 port


http://www.cnx-software.com/2015/05/14/firewrt-is-an-openwrt-802-11ac-board-powered-by-mediatek-mt7621a-processor/